Walk-in tub with shower safety, standing and seated
Direct answer: a walk-in tub with shower serves two kinds of bathers, so it has two kinds of risk. The standing showerer needs a textured floor, a grab bar at standing height and a curtain kept inside the rim. The seated soaker needs reachable controls, water no hotter than 120°F and a way to call for help while the door is sealed. Everyone needs a dry floor outside the door. Federal data shows why: most bathroom injuries are falls, and most happen in or around the tub or shower.
What the federal data shows
The CDC looked at bathroom injuries treated in U.S. emergency departments in 2008 among people aged 15 and older: an estimated 234,094 in one year. The pattern points straight at the fixture this site is about.
Source: Stevens and others, Nonfatal Bathroom Injuries Among Persons Aged ≥15 Years, United States, 2008, CDC MMWR 60(22), 2011. Shares of all bathroom injuries; categories overlap.
Show the numbers as a table
| Measure | Share of bathroom injuries |
|---|---|
| Caused by a fall | 81.1% |
| In or around the tub or shower | 68.3% |
| While bathing, showering or getting out of the tub or shower | 37.3% |
| On or near the toilet | 23.4% |
The same report found injury rates rising with age, reaching 515.3 per 100,000 people aged 85 and older. More broadly, the CDC reports that more than one in four older adults falls each year. A walk-in tub lowers the step that causes many tub falls, but a shower added to it brings back a wet standing surface, so the details below matter.
Risks on a combo, and what reduces them
| Risk | Where it comes from on a combo | What helps |
|---|---|---|
| Slipping while standing | The standing showerer stands on a wet, smaller tub floor. | A textured, slip-resistant floor; a grab bar at standing height; a seated shower on unsteady days. |
| Grabbing the wrong thing | Curtain rods, slide bars, towel bars and the door handle are within reach and look sturdy. | Only rated, anchored grab bars. The NIA suggests bars both inside and outside the tub and shower. |
| A wet floor outside the door | Spray on the door seal, or a curtain hanging outside the rim, puts water where you step out. | Liner inside the rim, spray aimed at the back wall, and a nonskid mat outside the door. See splash control. |
| Scalds | Older adults are among the people most often scalded, and a seated bather cannot step away from hot water quickly. | Heater at 120°F; a code-compliant shower valve with its limit stop set; test the water with your hand before sitting. |
| Getting up wet and chilled | The soaker sits through the drain before standing. | A warm room, a towel within reach and the hand shower during the drain. See the drain wait. |
| Needing help with the door sealed | The door cannot open while the tub holds water. | Open the drain, call for help, stay seated. Keep a phone or alert button within reach. |
| Night-time trips | Water on the floor is hard to see in the dark. | The NIA suggests a night light or a light left on in the bathroom. |
Scalds: how fast hot water burns
The U.S. Consumer Product Safety Commission gives these exposure times for third-degree burns in most adults, and urges everyone to set water heaters to 120°F:
| Water temperature | Time to a third-degree burn |
|---|---|
| 150°F | 2 seconds |
| 140°F | 6 seconds |
| 130°F | 30 seconds |
| 120°F | 5 minutes |
The 2021 International Plumbing Code requires shower and tub-shower valves to be pressure-balanced, thermostatic or a combination, with a limit that is set on site so the water does not exceed 120°F. That limit stop is easy to forget during an install, so ask your installer to show you that it has been set. If you need a hotter tank for capacity, the water heater guide explains safer options.
Checklist for the standing showerer
- Close and latch the door before turning on the water.
- Draw the curtain so the liner hangs inside the rim, or check the glass screen is closed.
- Keep one hand near the standing-height grab bar while you turn, wash your feet or rinse your hair.
- Use the seat and the hand shower on any day your balance feels off.
- Turn the water off and let the floor drain before opening the door.
Checklist for the seated soaker
- Test the water with your hand before you sit, every time.
- Check that the controls and the hand shower are reachable without leaning over the water.
- Keep a phone or personal alert button within reach for the whole bath.
- Stand only when the tub is empty, using the grab bar, and step out onto a mat.
- Ask your doctor about warm soaks if you have heart, blood pressure, circulation or skin conditions.
Questions to ask before you buy
- Where will each grab bar go: for the seat, for standing, and at the door?
- Is the tub floor textured where the standing showerer will stand?
- Which valve feeds the shower, and will you set its 120°F limit stop?
- Can the seated bather reach the controls and the hand shower?
- Where does the curtain or screen go, and does it clear the door swing?
Aging Safely Baths also keeps a page of bathroom fall statistics with more of the national data.
Questions people ask
Is it safe to stand up and shower in a walk-in tub?
For a person with steady balance, yes, with a textured floor, a grab bar at standing height and a curtain or screen inside the rim. Anyone unsteady should shower seated on the built-in seat with the hand shower instead.
What water temperature is safe for a walk-in tub with shower?
The CPSC urges setting water heaters to 120 degrees Fahrenheit, and plumbing codes require shower and tub-shower valves to be able to limit their output to 120 degrees. Even at 120 degrees, the CPSC notes that five minutes of exposure can cause a serious burn, so test the water before you sit.
Where should grab bars go on a walk-in tub with shower?
The NIA suggests grab bars on both the inside and outside of the tub and shower. On a combo that means one the seated bather can reach, one at standing height for the showerer, and one at the door for stepping in and out.
Can I use the shower curtain rod or slide bar to steady myself?
No. Curtain rods and most shower slide bars are not built to carry body weight. Use only bars that are rated and anchored as grab bars.
What if I feel unwell while the walk-in tub is full?
Do not try to open the door. Open the drain, call for help with a phone or personal alert button kept within reach, and stay seated until the water is down.
Sources
- Bathroom injury counts, shares and rates: Centers for Disease Control and Prevention, Nonfatal Bathroom Injuries Among Persons Aged ≥15 Years, United States, 2008, MMWR 2011;60(22).
- More than one in four older adults falls each year: CDC, Older Adult Fall Data.
- Grab bars inside and outside the tub and shower, nonskid mats, night lights: National Institute on Aging, Preventing Falls at Home: Room by Room.
- 120°F setting, burn times and who is most at risk: U.S. Consumer Product Safety Commission, Avoiding Tap Water Scalds (PDF).
- Shower and tub-shower valve requirements and the 120°F limit: International Code Council, 2021 IPC section 412.3 (PDF).
Planning a combo for someone you care for?
Tell us who will stand, who will sit and who helps. We will suggest grab bar positions, a shower setup and a curtain or screen that suit the household.